static int create_and_fill_file(const char *path, int number, size_t size,
struct flow *fw)
{
char full_fn[PATH_MAX];
const char *filename;
int fd, fine;
void *buf;
size_t remaining;
uint64_t offset;
ssize_t written;
assert(size > 0);
assert(size % fw->block_size == 0);
/* Create the file. */
full_fn_from_number(full_fn, &filename, path, number);
printf("Creating file %s ... ", filename);
fflush(stdout);
fd = open(full_fn, O_CREAT | O_WRONLY | O_TRUNC, S_IRUSR | S_IWUSR);
if (fd < 0) {
if (errno == ENOSPC) {
printf("No space left.\n");
return 0;
}
err(errno, "Can't create file %s", full_fn);
}
assert(fd >= 0);
/* Obtain the buffer. */
buf = alloca(fw->block_size);
assert(buf);
/* Write content. */
fine = 1;
offset = (uint64_t)number * GIGABYTES;
remaining = size;
start_measurement(fw);
while (remaining > 0) {
offset = fill_buffer(buf, fw->block_size, offset);
written = write(fd, buf, fw->block_size);
if (written < 0) {
if (errno == ENOSPC) {
fine = 0;
break;
} else
err(errno, "Write to file %s failed", full_fn);
}
assert(written == fw->block_size);
remaining -= written;
measure(fd, fw);
}
assert(!fine || remaining == 0);
end_measurement(fd, fw);
close(fd);
printf("OK!\n");
return fine;
}
int main() {
int i = read_int();
start_measurement();
int res = fib(i);
end_measurement();
print_int(res);
return 0;
}
void main() {
start_measurement();
int res = fib(15);
end_measurement();
print_int(res);
}
